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36 lines
2.7 KiB
Markdown
36 lines
2.7 KiB
Markdown
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# FAQ
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- Q: What is Grin? A: An implementation of [MimbleWimble](https://download.wpsoftware.net/bitcoin/wizardry/mimblewimble.txt)
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- Q: Similar to Bitcoin? A: Both are outputs-based, PoW. Read [Grin for Bitcoiners](grin4bitcoiners.md)
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- Q: mining? A: Testnet only. CPU, synchronous. GPU or asynchronous is not yet supported.
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- Q: block height? A: HTTP GET /v1/chain on a public peer node, for example http://testnet1.yeastplume.com:13413/v1/chain
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- Q: Store of value? A: please don't. We delete testnet coins randomly. And the wallet likes to crash. Developers wecome!
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- Q: grin wallet / grin server hangs? A: Yes. Be your own watchdog. Watchdog code for capturing debug log and restarting the hung process - pull reqs welcome.
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- Q: Block size limit? Target mean block time?
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- Q: Fees? Monetary policy? A: https://github.com/mimblewimble/grin/wiki/fees-mining
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- Q: Roadmap? A: Moving fast, changing things. Maybe look at [issues and milestones](https://github.com/mimblewimble/grin/milestones)
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- Q: Proof of payment? A: Planned. Maybe in testnet2
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- Q: Microtransactions? A: On testnet1, fees are 0.8% on a transaction of 1.0 coins.
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- Q: Could Grin ever support or make use of:
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☑ Probably, or ☐ Probably not
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A: ☑ Contracts, ☑ [Pruning](pruning.md), ☐ Identity, like bitauth, ☑ SNARKs, ☑ [Cross chain atomic swaps, multisig, time locks, lightning network](grin4bitcoiners.md#scripting), ☑ Payment channels, ☑ hidden nodes / onion routing
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- Q: HW requirements for mining? A: Not much. Don't invest in equipment yet, there's not even a final beta released, and a lot can change before any official blockchain is launched.
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- Q: Quantum safe? A: Should be. In every Grin output, we also include a bit of hashed data, which is quantum safe. If quantum computing was to become a reality, we can safely introduce additional verification that would protect existing coins from being hacked. [Read more](https://github.com/mimblewimble/grin/blob/master/doc/grin4bitcoiners.md)
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# Troubleshooting
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## Coins are 'confirmed but still locked'?
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Like other cryptocurrencies, newly mined coins are time locked, so mined coins can't be spent immediately.
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## "Peer request error" or other peer/network issues after restarting grin server
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Possible workaround is rm -rf .grin/peers/* then restart.
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## Build error: Could not compile `tokio-retry`.
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You need the latest rust. rustup, or [reinstall rust as described](build.md)
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# Short term plans
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## Transaction types
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- (DONE) A temporary simple transaction exchange. Temporary - will be deprecated.
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- (months) Maybe in testnet2 Full transaction; an exchange which involves a full roundtrip between sender and receiver using aggregate (Schnorr) signatures. Usable as proof of payment and for multisig.
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